Footprints of a T. rex-type dinosaur chasing an Apatosaurus-like animal have been turned into a 3-D fly-through, giving researchers a way to verify maps of the tracks drawn 70 years ago.

The tracks, from the Paluxy River in Texas, are among the most famous dinosaur footprints in the world. But the pathway has been under threat since paleontologists excavated, divided and moved some of the prints to museums, and others have been lost.